CN105045541A - Increment snapshot method and apparatus - Google Patents
Increment snapshot method and apparatus Download PDFInfo
- Publication number
- CN105045541A CN105045541A CN201510578282.8A CN201510578282A CN105045541A CN 105045541 A CN105045541 A CN 105045541A CN 201510578282 A CN201510578282 A CN 201510578282A CN 105045541 A CN105045541 A CN 105045541A
- Authority
- CN
- China
- Prior art keywords
- time point
- bitmap
- source data
- data
- snapshot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The embodiment of the invention discloses an increment snapshot method and an apparatus. The method comprises steps of copying original data of source data coil in an initial snapshot time point on a snapshot coil, displaying copying results of the snapshot coil on a control bit map, displaying updated data block position of the source data coil on an increment bit map, conducting xor processing for the control bit map and the increment bit map to achieve a control bit map for a next snapshot time point, copying the data in the source data coil on the snapshot coil according to the control bit map of the next snapshot time point, and displaying the updated data block position of the source data coil in the next snapshot time on the increment bit map. Updated data in the source data coil can be only copied, so work amount of data copying in the continuous time point can be reduced; and an entire physical copy for the source data coil in any time points can be achieved via reverse reasoning via the increment bit map and the control bit map.
Description
Technical field
The present invention relates to snapping technique field, more particularly, relate to a kind of incremental snapshot method and device.
Background technology
Storage networking TIA (StorageNetworkingIndustryAssociation, SNIA) is defined as snapshot: snapshot is that a data object produces completely available copy, and it comprises this data object at the reflection put sometime.At present, the factory commercial city of many scientific research institutions and storage system develops the technology realizing snapshot in storage subsystem, but these snapping techniques mainly lay particular emphasis on the snapshot realizing single time point, and the snapshot of same data object at continuous time point is processed as just multiple independent snapshot, the workload of its data Replica is large.
Therefore, how reducing the data Replica workload of same data object at continuous time point, is the problem needing to solve.
Summary of the invention
The object of the present invention is to provide a kind of incremental snapshot method and device, to reduce the data Replica workload of same data object at continuous time point.
For achieving the above object, following technical scheme is embodiments provided:
A kind of incremental snapshot method, comprising:
Source data is twisted in the raw data of initial snapshot time point, copy on snapped volume, and copy result what control bitmap shows described snapped volume, increment bitmap shows the position that described source data rolls up the data block be updated;
Described control bitmap and described increment bitmap are carried out XOR process, draws the control bitmap of next Snapshot time point;
According to the control bitmap of next Snapshot time point described, by the data Replica in described source data volume on described snapped volume, and on described increment bitmap, show the position that described source data twists in the data block that next Snapshot time point described is updated.
Preferably, described raw data source data being twisted in initial snapshot time point, copies on snapped volume, comprising:
Source data is twisted in the raw data of initial snapshot time point, partial replication is on snapped volume; Or, source data is twisted in the raw data of initial snapshot time point, all copies on snapped volume.
Preferably, describedly copy result what control bitmap shows described snapped volume, increment bitmap show the position that described source data rolls up the data block be updated, comprising:
Described control bitmap shows the position of the data block that described snapped volume copies at described initial snapshot time point;
With on the described increment bitmap of the identical structure of described control bitmap, show the position that described source data rolls up the data block be updated.
Preferably, described control bitmap and described increment bitmap are carried out XOR process, before drawing the control bitmap of next Snapshot time point, also comprise:
Judge whether described source data volume is updated;
If so, then described source data is rolled up the time point be updated, as next Snapshot time point described, and described control bitmap and described increment bitmap are carried out XOR process by execution, draw the control bitmap of next Snapshot time point;
According to the control bitmap of next Snapshot time point described, by the data Replica in described source data volume on described snapped volume, and on described increment bitmap, show the step that described source data twists in the position of the data block that next Snapshot time point described is updated.
A kind of incremental snapshot device, comprising:
Replication module, for source data being twisted in the raw data of initial snapshot time point, copies on snapped volume; And according to the control bitmap of next Snapshot time point, by the data Replica in described source data volume on described snapped volume;
Control bitmap update module, for copying result what control bitmap shows described snapped volume; And the control bitmap of next Snapshot time point XOR module drawn is updated to described control bitmap;
Increment bitmap update module, rolls up the position of the data block be updated for showing described source data on increment bitmap;
XOR module, for described control bitmap and described increment bitmap are carried out XOR process, draws the control bitmap of next Snapshot time point.
Preferably, described replication module, comprising:
First initial replication unit, for source data being twisted in the raw data of initial snapshot time point, partial replication is on snapped volume;
Second initial replication unit, for source data being twisted in the raw data of initial snapshot time point, all copies on snapped volume.
Preferably, described control bitmap update module, comprising:
Described control bitmap shows the position of the data block that described snapped volume copies at described initial snapshot time point, and the control bitmap of next the Snapshot time point drawn according to XOR module upgrades described control bitmap.
Preferably, described increment bitmap update module, comprising:
With on the described increment bitmap of the identical structure of described control bitmap, show the position that described source data rolls up the data block be updated.
Preferably, also comprise:
Judge module, for judging whether described source data volume is updated;
If so, then described source data is rolled up the time point be updated, as next Snapshot time point described, and trigger described XOR module.
Known by above scheme, a kind of incremental snapshot method that the embodiment of the present invention provides and device, comprise: raw data source data being twisted in initial snapshot time point, copy on snapped volume, and copy result what control bitmap shows described snapped volume, increment bitmap shows the position that described source data rolls up the data block be updated, described control bitmap and described increment bitmap are carried out XOR process, draws the control bitmap of next Snapshot time point, according to the control bitmap of next Snapshot time point described, by the data Replica in described source data volume on described snapped volume, and on described increment bitmap, show the position that described source data twists in the data block that next Snapshot time point described is updated, the present invention is by one group of snapped volume, control bitmap and increment bitmap, just can realize the data Replica of same data object at continuous time point, and because the present invention only understands the data in the source data volume of copy update, substantially reduce the workload at continuous time point data Replica, and can be pushed away by increment bitmap and control the counter of bitmap, the complete physical copy of the source data volume put at any time.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of incremental snapshot method flow schematic diagram disclosed in the embodiment of the present invention;
Fig. 2 a kind of source data volume disclosed in the embodiment of the present invention copies schematic diagram data to snapped volume;
Fig. 3 is a kind of control bit figure schematic diagram disclosed in the embodiment of the present invention;
Fig. 4 is a kind of increment bitmap schematic diagram disclosed in the embodiment of the present invention;
Fig. 5 another kind of source data volume disclosed in the embodiment of the present invention copies schematic diagram data to snapped volume;
Fig. 6 is another kind of control bit figure schematic diagram disclosed in the embodiment of the present invention;
Fig. 7 is another kind of increment bitmap schematic diagram disclosed in the embodiment of the present invention;
Fig. 8 is a kind of incremental snapshot apparatus structure schematic diagram disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of incremental snapshot method and device, to reduce the data Replica workload of same data object at continuous time point.
See Fig. 1, a kind of incremental snapshot method that the embodiment of the present invention provides, comprising:
S101, source data is twisted in the raw data of initial snapshot time point, copy on snapped volume, and copy result what control bitmap shows described snapped volume, increment bitmap shows the position that described source data rolls up the data block be updated;
Concrete, in incremental snapshot technology, a source data twists in the snapshot same snapped volume creating a series of continuous print different time points, but may have between initial snapshot time point and next Snapshot time point and change many times, but only have an in the end moment, the snapshot that next the Snapshot time point namely in the present embodiment creates is available; And on this snapped volume, snapped volume at the snapshot data of some time points, by utilize by the snapshot after this time point.
Describe for example is convenient, initial snapshot time point is designated as time point A by the present embodiment, and next Snapshot time point is designated as time point B, and time point A here and time point B is two adjacent time points.
Preferably, in the present embodiment, also comprise judge described source data volume whether be updated;
If so, then described source data is rolled up the time point be updated, as next Snapshot time point described, and continue to perform S102.
Concrete, described source data is rolled up the time point be updated, as next Snapshot time point described, namely after judging that described source data volume is updated, using current time as next Snapshot time point, i.e. time point B, if in like manner future time point, described source data volume is updated again, then using future time point as next Snapshot time point described, and continue to perform S102.
Concrete, if be not updated between time point A and time point B, then need not be replicated again after the snapshot of B time point is created, this workload of replicate run that will greatly reduce needed for each snapshot.
Preferably, described raw data source data being twisted in initial snapshot time point, copies on snapped volume, comprising:
Source data is twisted in the raw data of initial snapshot time point, partial replication is on snapped volume; Or, source data is twisted in the raw data of initial snapshot time point, all copies on snapped volume.
It should be noted that, in the present embodiment, the original data portion twisting in initial snapshot time point for source data is copied on snapped volume, is described, wherein the data that source data is rolled up all are copied on snapped volume identical with principle on partial replication to snapped volume, do not repeat here.
Concrete see Fig. 2, the source data volume 1 that the present embodiment provides copies schematic diagram data to snapped volume 2, see Fig. 3, is the control bit Fig. 3 schematic diagram at initial snapshot time point that the present embodiment provides, see Fig. 4, it is increment bitmap 4 schematic diagram at initial snapshot time point that the present embodiment provides.
Concrete, the data block of the dash area in source data volume 1 is the data block occurring to upgrade, and unblanketed data block is the data frame not occurring to upgrade; Snapped volume is a snapped volume being more than or equal to source data Volume Space, and what in snapped volume 2, have striped shade is rolled up from source data the data block copied, and without striped shade is do not roll up from source data the data block copied.
Concrete, see Fig. 3, in control bit Fig. 3, be the structure bitmap after 1 expression copies in snapped volume 2, can find out in square frame, in control bit Fig. 3, the position at square frame 1 place is consistent with the position of the data block copied in Fig. 2 snapped volume.
See Fig. 4, in increment bitmap 4 square frame be 1 expression be the position of the data block that snapped volume 2 is updated, can find out, in increment bitmap 4, in the position at square frame 1 place and Fig. 2, source data rolls up the position consistency of the data block that 1 upgrades.
S102, described control bitmap and described increment bitmap are carried out XOR process, draw the control bitmap of next Snapshot time point;
S103, control bitmap according to next Snapshot time point described, by the data Replica in described source data volume on described snapped volume, and show the position that described source data twists in the data block that next Snapshot time point described is updated on described increment bitmap.
Concrete see Fig. 5, the present embodiment provide at time point B, source data volume 1 copies the structural representation of data to snapped volume 2, see Fig. 6, for control bit Fig. 3 schematic diagram of next Snapshot time point that the present embodiment provides, see Fig. 7, it is increment bitmap 4 schematic diagram at next Snapshot time point that the present embodiment provides.
Concrete, after the control bitmap in Fig. 3 and the increment bitmap XOR process in Fig. 4, the control bitmap of next the Snapshot time point drawn as shown in Figure 5, and according to controlling bitmap updating decision in Fig. 5 according to volume 2, and roll up 1 from the source data in Fig. 5, the data block that source data volume 1 does not upgrade, thus next Snapshot time point increment bitmap as shown in Figure 7.
Concrete, incremental snapshot technology is after a certain Snapshot time point, to controlling the operation of bitmap with to copy snapping technique as required identical: control bitmap by inquiring about, implement background copy and write front replicate run, data Replica source data rolled up on snapped volume, and will copy result queue on control bitmap.After utilizing increment bitmap record Snapshot time point, source data volume is updated the position of data block simultaneously, and no matter these upgrade whether cause write before copy, namely during this period of time same data block may be modified repeatedly, and on increment bitmap, only record once upgrades.
When needing to create this incremental snapshot when the snapshot of new time point B, the data that source data has been twisted in time point A by the snapshot of the previous time point A of incremental snapshot copy on snapped volume whole or in part, and continuation is utilized by the snapshot of time point B by these data copying to snapped volume; Xor operation is carried out in the now control bitmap step-by-step of the snapshot of increment bitmap and time point A, the control bitmap of the snapshot of generation time point B, the snapshot of time point B by according to which data in the new control bitmap determining source book produced needs to be replicated in this snapshot; Increment bitmap is initialised simultaneously, starts the position of noting down time point B opisthogenesis book generation Data Update.
Such incremental snapshot uses same group of snapped volume, controls bitmap and increment bitmap, achieve the snapshot of continuous time point, decrease the workload of snapped volume data Replica simultaneously, and after the snapshot of time point B is created, not yet complete the data be updated in the source data volume data and source data volume copied after only having a upper Snapshot time point A to need to copy, required for the time cost that copies obviously be better than Split Mirror and copy snapping technique as required, and along with the increase of Snapshot time point, this advantage will be more and more obvious; And compared with virtual view snapshot, although incremental snapshot is comparatively large in Time and place cost, can obtain the complete physical copy that source data twists in each time point, then this is that virtual view snapping technique cannot realize.Therefore incremental snapshot technology is very suitable for the snapshot realizing continuous time point, is a kind of snapping technique of balancing performance.
It should be noted that, the present embodiment take book as the snapping technique that object studies in storage subsystem, and same technology also can be applied on disk, file system, database data object.
A kind of incremental snapshot method that the embodiment of the present invention provides, comprise: raw data source data being twisted in initial snapshot time point, copy on snapped volume, and copy result what control bitmap shows described snapped volume, increment bitmap shows the position that described source data rolls up the data block be updated, described control bitmap and described increment bitmap are carried out XOR process, draws the control bitmap of next Snapshot time point, according to the control bitmap of next Snapshot time point described, by the data Replica in described source data volume on described snapped volume, and on described increment bitmap, show the position that described source data twists in the data block that next Snapshot time point described is updated, the present invention is by one group of snapped volume, control bitmap and increment bitmap, just can realize the data Replica of same data object at continuous time point, and because the present invention only understands the data in the source data volume of copy update, substantially reduce the workload at continuous time point data Replica, and can be pushed away by increment bitmap and control the counter of bitmap, the complete physical copy of the source data volume put at any time.
Preferably, in another embodiment of the invention, describedly copy result what control bitmap shows described snapped volume, increment bitmap show the position that described source data rolls up the data block be updated, comprising:
Described control bitmap shows, the position of the data block that described snapped volume copies at described initial snapshot time point;
With on the described increment bitmap of the identical structure of described control bitmap, show the position that described source data rolls up the data block be updated.
See Fig. 8, a kind of incremental snapshot device that the embodiment of the present invention provides, comprising:
Replication module 100, for source data being twisted in the raw data of initial snapshot time point, copies on snapped volume; And according to the control bitmap of next Snapshot time point, by the data Replica in described source data volume on described snapped volume;
Control bitmap update module 200, for copying result what control bitmap shows described snapped volume; And the control bitmap of next Snapshot time point XOR module drawn is updated to described control bitmap;
Increment bitmap update module 300, rolls up the position of the data block be updated for showing described source data on increment bitmap;
XOR module 400, for described control bitmap and described increment bitmap are carried out XOR process, draws the control bitmap of next Snapshot time point.
Preferably, in another embodiment of the invention, described replication module 100, comprising:
First initial replication unit, for source data being twisted in the raw data of initial snapshot time point, partial replication is on snapped volume;
Second initial replication unit, for source data being twisted in the raw data of initial snapshot time point, all copies on snapped volume.
Preferably, in another embodiment of the invention, described control bitmap update module 200, comprising:
Described control bitmap shows the position of the data block that described snapped volume copies at described initial snapshot time point, and the control bitmap of next the Snapshot time point drawn according to XOR module upgrades described control bitmap.
Preferably, in another embodiment of the invention, described increment bitmap update module 300, comprising:
With on the described increment bitmap of the identical structure of described control bitmap, show the position that described source data rolls up the data block be updated.
Preferably, in another embodiment of the invention, also comprise:
Judge module, for judging whether described source data volume is updated;
If so, then described source data is rolled up the time point be updated, as next Snapshot time point described, and trigger described XOR module.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an incremental snapshot method, is characterized in that, comprising:
Source data is twisted in the raw data of initial snapshot time point, copy on snapped volume, and copy result what control bitmap shows described snapped volume, increment bitmap shows the position that described source data rolls up the data block be updated;
Described control bitmap and described increment bitmap are carried out XOR process, draws the control bitmap of next Snapshot time point;
According to the control bitmap of next Snapshot time point described, by the data Replica in described source data volume on described snapped volume, and on described increment bitmap, show the position that described source data twists in the data block that next Snapshot time point described is updated.
2. incremental snapshot method according to claim 1, is characterized in that, described raw data source data being twisted in initial snapshot time point, copies on snapped volume, comprising:
Source data is twisted in the raw data of initial snapshot time point, partial replication is on snapped volume; Or, source data is twisted in the raw data of initial snapshot time point, all copies on snapped volume.
3. incremental snapshot method according to claim 2, is characterized in that, describedly copies result what control bitmap shows described snapped volume, increment bitmap shows the position that described source data rolls up the data block be updated, comprising:
Described control bitmap shows the position of the data block that described snapped volume copies at described initial snapshot time point;
With on the described increment bitmap of the identical structure of described control bitmap, show the position that described source data rolls up the data block be updated.
4. incremental snapshot method according to claim 3, is characterized in that, described control bitmap and described increment bitmap is carried out XOR process, before drawing the control bitmap of next Snapshot time point, also comprises:
Judge whether described source data volume is updated;
If so, then described source data is rolled up the time point be updated, as next Snapshot time point described, and described control bitmap and described increment bitmap are carried out XOR process by execution, draw the control bitmap of next Snapshot time point;
According to the control bitmap of next Snapshot time point described, by the data Replica in described source data volume on described snapped volume, and on described increment bitmap, show the step that described source data twists in the position of the data block that next Snapshot time point described is updated.
5. an incremental snapshot device, is characterized in that, comprising:
Replication module, for source data being twisted in the raw data of initial snapshot time point, copies on snapped volume; And according to the control bitmap of next Snapshot time point, by the data Replica in described source data volume on described snapped volume;
Control bitmap update module, for copying result what control bitmap shows described snapped volume; And the control bitmap of next Snapshot time point XOR module drawn is updated to described control bitmap;
Increment bitmap update module, rolls up the position of the data block be updated for showing described source data on increment bitmap;
XOR module, for described control bitmap and described increment bitmap are carried out XOR process, draws the control bitmap of next Snapshot time point.
6. incremental snapshot device according to claim 5, is characterized in that, described replication module, comprising:
First initial replication unit, for source data being twisted in the raw data of initial snapshot time point, partial replication is on snapped volume;
Second initial replication unit, for source data being twisted in the raw data of initial snapshot time point, all copies on snapped volume.
7. incremental snapshot device according to claim 6, is characterized in that, described control bitmap update module, comprising:
Described control bitmap shows the position of the data block that described snapped volume copies at described initial snapshot time point, and the control bitmap of next the Snapshot time point drawn according to XOR module upgrades described control bitmap.
8. incremental snapshot device according to claim 7, is characterized in that, described increment bitmap update module, comprising:
With on the described increment bitmap of the identical structure of described control bitmap, show the position that described source data rolls up the data block be updated.
9. incremental snapshot device according to claim 8, is characterized in that, also comprise:
Judge module, for judging whether described source data volume is updated;
If so, then described source data is rolled up the time point be updated, as next Snapshot time point described, and trigger described XOR module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510578282.8A CN105045541B (en) | 2015-09-11 | 2015-09-11 | A kind of incremental snapshot method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510578282.8A CN105045541B (en) | 2015-09-11 | 2015-09-11 | A kind of incremental snapshot method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105045541A true CN105045541A (en) | 2015-11-11 |
| CN105045541B CN105045541B (en) | 2019-06-18 |
Family
ID=54452112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510578282.8A Active CN105045541B (en) | 2015-09-11 | 2015-09-11 | A kind of incremental snapshot method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105045541B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798063A (en) * | 2017-09-20 | 2018-03-13 | 华为技术有限公司 | Snap processing method and snapshot processing unit |
| CN107908755A (en) * | 2017-11-21 | 2018-04-13 | 郑州云海信息技术有限公司 | A kind of snapshot document processing method and processing device |
| CN109144418A (en) * | 2018-08-16 | 2019-01-04 | 郑州云海信息技术有限公司 | A kind of method of data synchronization and device |
| CN113986115A (en) * | 2020-07-27 | 2022-01-28 | 伊姆西Ip控股有限责任公司 | Method, electronic device and computer program product for copying data |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096616A (en) * | 2011-02-15 | 2011-06-15 | 成都市华为赛门铁克科技有限公司 | Logical object data duplication method and related device |
| CN102411524A (en) * | 2011-12-30 | 2012-04-11 | 云海创想信息技术（天津）有限公司 | Snapshot volume data copying method |
| CN104166606A (en) * | 2014-08-29 | 2014-11-26 | 华为技术有限公司 | File backup method and main storage device |
-
2015
- 2015-09-11 CN CN201510578282.8A patent/CN105045541B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096616A (en) * | 2011-02-15 | 2011-06-15 | 成都市华为赛门铁克科技有限公司 | Logical object data duplication method and related device |
| CN102411524A (en) * | 2011-12-30 | 2012-04-11 | 云海创想信息技术（天津）有限公司 | Snapshot volume data copying method |
| CN104166606A (en) * | 2014-08-29 | 2014-11-26 | 华为技术有限公司 | File backup method and main storage device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798063A (en) * | 2017-09-20 | 2018-03-13 | 华为技术有限公司 | Snap processing method and snapshot processing unit |
| CN107798063B (en) * | 2017-09-20 | 2020-12-15 | 华为技术有限公司 | Snapshot processing method and snapshot processing device |
| CN107908755A (en) * | 2017-11-21 | 2018-04-13 | 郑州云海信息技术有限公司 | A kind of snapshot document processing method and processing device |
| CN109144418A (en) * | 2018-08-16 | 2019-01-04 | 郑州云海信息技术有限公司 | A kind of method of data synchronization and device |
| CN113986115A (en) * | 2020-07-27 | 2022-01-28 | 伊姆西Ip控股有限责任公司 | Method, electronic device and computer program product for copying data |
| US11442895B2 (en) * | 2020-07-27 | 2022-09-13 | EMC IP Holding Company LLC | Method for copying data, electronic device and computer program product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105045541B (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110998538B (en) | Asynchronous local and remote generation of consistent point-in-time snapshot copies in a consistency group | |
| CN105045541A (en) | Increment snapshot method and apparatus | |
| US8688936B2 (en) | Point-in-time copies in a cascade using maps and fdisks | |
| CN103098014B (en) | Storage system | |
| RU2679280C1 (en) | System and method of page displaying | |
| CN103810058B (en) | Backup method, equipment and system for virtual machine | |
| CN103098016B (en) | De-duplication based backup of file systems | |
| CN104166606A (en) | File backup method and main storage device | |
| US20190324875A1 (en) | Method and apparatus for failure recovery of storage device | |
| CN103019888A (en) | Backup method and device | |
| US20160246516A1 (en) | Data Operation Method and Device | |
| CN105493095A (en) | Adaptive and recursive filtering for sample submission | |
| CN105868361A (en) | Data updating method and device | |
| CN109086425B (en) | Data processing method and device for database | |
| DE112011103367T5 (en) | Replicate data | |
| CN110019134A (en) | The multi-edition control method and equipment of database | |
| CN106126731A (en) | A kind of method and device obtaining Elasticsearch paged data | |
| CN103927263A (en) | Garbage recycling method and garbage recycling device | |
| CN115048254A (en) | Simulation test method, system, equipment and readable medium of data distribution strategy | |
| DE112018000227T5 (en) | A method of partially updating data content in a distributed storage network | |
| US20190215363A1 (en) | Dynamic pool-based tiering for synchronization storage | |
| CN104991836A (en) | Database recovery method and apparatus and database server | |
| CN104008148A (en) | Method and device for publishing webpage file | |
| US20050240808A1 (en) | Write set boundary management in support of asynchronous update of secondary storage | |
| CN106547642B (en) | Data storage backup method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |